I'm thinking about writing my own version of the Secret Wars storyline imagined as an animated film from Disney Animation Studios. Obviously, I can't use some heroes and villains because of marketability and popularity.

So from all the heroes and villains from the Marvel Universe(and groups such as the Avengers, Fantastic Four, X-Men, Masters of Evil, Sinister Six, Brotherhood of Evil Mutants, etc.), which ones should I put in to form a roster?